When the money is credited to your account, then you may act on it immediately - take it out in a bank, take it out in an ATM, pay for services with this money by a debitcard, transfer it so someone else, etc.
However, taking out 100.000 in cash might require advance notice, as it's a rather rare case and many smaller branches (say, 2-teller branch in a mall) by default wouldn't actually have that much cash in place, so they need to request extra cash to be shipped to them.
Also, any such cash transaction will be instantly reported to the government/police, as required by 'money laundering' laws; and identity verification when opening an account is a bit stricter than in USA - generally, account holders tend to be real even in fraud cases; identity theft/document forgery is very hard and rare.
There are fraud/money laundering cases where the recipient/account holder is a homeless guy that had earlier been washed&dressed in a suit&instructed by mafia to open an account. Internal security do get notice of such attempts immediately and verify the transactions. I have seen cases where "transfers €100k to your account, withdraw it as cash 5 minutes later" ends up in arresting the guy right there in the branch while asking to make the withdrawal.
In any case, ACH/wire transfers that take a day or less and cost no more a few cents are easily possible; but the banks aren't motivated to do this. In EU, the government forced us by law to offer better conditions for customers; otherwise the fees&float were good income (free rent) as long as everybody else is using the same ACH. A central ACH that has a lot of technical delays and high fees essentially allows a price-fixing cartel without technically/legally being a price-fixing cartel.
However, taking out 100.000 in cash might require advance notice, as it's a rather rare case and many smaller branches (say, 2-teller branch in a mall) by default wouldn't actually have that much cash in place, so they need to request extra cash to be shipped to them.
Also, any such cash transaction will be instantly reported to the government/police, as required by 'money laundering' laws; and identity verification when opening an account is a bit stricter than in USA - generally, account holders tend to be real even in fraud cases; identity theft/document forgery is very hard and rare.
There are fraud/money laundering cases where the recipient/account holder is a homeless guy that had earlier been washed&dressed in a suit&instructed by mafia to open an account. Internal security do get notice of such attempts immediately and verify the transactions. I have seen cases where "transfers €100k to your account, withdraw it as cash 5 minutes later" ends up in arresting the guy right there in the branch while asking to make the withdrawal.
In any case, ACH/wire transfers that take a day or less and cost no more a few cents are easily possible; but the banks aren't motivated to do this. In EU, the government forced us by law to offer better conditions for customers; otherwise the fees&float were good income (free rent) as long as everybody else is using the same ACH. A central ACH that has a lot of technical delays and high fees essentially allows a price-fixing cartel without technically/legally being a price-fixing cartel.